(a+b)² - 11(a+b) - 42
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= -11(a+b)^-42
= (a+b)^-11-42
= (a+b) ^-53
= (a+b)^-11-42
= (a+b) ^-53
xooliviachen2017xo:
That isn't the correct answer but thanks for trying to help anyway
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